#box{
     text-align: center;
     width: 80%;
     margin: 0 auto;
}
#nav{
    font: 36px/2em 楷体;
    background: lightblue;
}
#bread{
    border-bottom: 1px black dotted;
    padding: 3px;
    text-align: left;
}
h1{font: 36px/2em 黑体;}
h2{width: 60%;border-bottom: 1px black solid;margin: 40px auto 20px;}
a{text-decoration: none;}
a:hover{
    text-decoration: underline;
    color: red;
}
.banner{width: 850px;height: 320px;}
.lastline{ margin-bottom: 2em; }
.pics{
    width: 350px; height: 515px; margin: 8px;
}
.intro{
    font: 18px/1.5em 宋体;
    width: 60%;
    margin: 20px auto;
    text-align: left;
}